Answer
$\approx 22$
Work Step by Step
Using the properties of radicals, the given expression, $
\sqrt{500}
,$ is approximately
\begin{array}{l}\require{cancel}
\sqrt{100\cdot5}
\\\\=
\sqrt{(10)^2\cdot5}
\\\\=
10\sqrt{5}
\\\\
\approx 22
.\end{array}